Additionally, the effect of the different operational conditions on the structure (diversity, evenness and richness) of the bacterial and archaeal communities was investigated.
Grazing changed the dominance structure, reduced the evenness and strongly influenced the composition of the collembolan community.
Our aim was to assess the impact of swan grazing on aquatic macrophyte presence, abundance and community structure (diversity and evenness) during the growing season (April to July).
However, after four years of herbivore exclusion (Figure 1b), species richness was significantly greater in the grazed plots than in the adjacent ungrazed plots, but there was no effect of herbivore type (Table 2). Figure 1 Change in three aspects of vegetation structure: species richness, evenness, and community composition.
It can be speculated that the bacterial community of the lower aquifer was characterized by a slight dominance both before and after the biostimulation treatment and sudden changes in the environmental conditions, as those determined by the supplement of lactate, would change the dominant species but would not influence the overall Co and evenness structure of the community.
But over the course of a night, she had an evenness, even a flatness.
To determine the species, genera and family richness, diversity and evenness, stand structure (density, abundance, frequency, dominance, population structure and important value index) and regeneration status of the woody species, nine and 10 parallel line transects, 50 m apart from each other, were used inside and outside the ORI compound, respectively.
While the use of richness and diversity parameters has still to be carefully considered, a decrease of evenness in structure of microbial diversity has been shown to be a good candidate warning indicator of process perturbation [ 43, 44].
Despite these differences in vegetation and soil characteristics, there were no significant differences in species diversity (richness, evenness) or vegetation structure (woody density, frequency, basal area) as a function of distance to forest (two-way ANOVA: P>0.05), most likely due to seed inputs from surrounding early successional habitats.
